I have a 6 band (6-20 meters) hexbeam from Waldi SP7IDX. The antenna is very nicely made and I'm planning to put it on the roof this spring.
Up until now I have been using a 20 meter long end-fed wire (PAR eletronics) for the 40 meter band. It slopes from the roof of my house down to the back of my back yard, Highest point is 11 meters (36') of the ground, lowest point just 2,5 meters (8'2") of the ground. So basically this is an NVIS antenna.
The antenna has served me well, actually better then I expected.
Despite my good results with the end fed wire, I'm thinking of trying something else.
Searching the internet I've found the following shortened 40 meter elements for a standard hexbeam: PDF for shortened 40 meter hexbeam
My question is, will this antenne outperform my end fed wire? Now, I know the shortened 40 meter hex is a BIG compremise antenna since it's elements are only half size and folded into a W shape. It will probably be outperformed by the low wire for the short distance contacts but is it possible to predict how it will perform on longer distance contacts?
The proof of the pudding is in the eating but I plan to put the Hexbeam on top of my roof and leave it their for at least the next 5 to 10 years.
I'm not afraid of heights but climbing on top of a 45 degree angled, 10 meters (32') high roof is not something I would like to do for a hobby so I would like to do it right the first time.
Furthermore, Building the shortened 40 meter hex with quality materials (materials that will last) will also cost around €150,-.
So I'd like to know as much as possible before jumping into this experiment.
Looking forward to hearing your opinions.